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Enamel wetness effects on bond strength using different adhesive systems.
A Y Furuse1, L F Cunha, R Moresca
1Department of Demtistry, Positivo University, Curitiba, Brazil. furuseay@hotmail.com
Operative Dentistry
|August 13, 2011
Summary
Wetness did not significantly impact the shear bond strength of most dental adhesives tested. However, all-in-one adhesives showed altered performance based on enamel surface moisture.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials Engineering
Background:
- Dentin bonding systems are crucial for achieving durable restorations.
- Controlling surface wetness during bonding is a critical factor for clinical success.
- Variability in adhesive performance necessitates understanding environmental influences.
Purpose of the Study:
- To investigate the effect of enamel surface wetness on the shear bond strength of various dentin bonding systems.
- To compare the performance of etch-and-rinse versus self-etching adhesive systems under different moisture conditions.
Main Methods:
- Evaluated five adhesive systems (three etch-and-rinse, two self-etching) on bovine enamel.
- Enamel surfaces were tested in both air-dried and blotted (wet) conditions.
- Shear bond strength was measured after one week of water storage, with statistical analysis using ANOVA.
Main Results:
- Overall wetness did not significantly affect shear bond strength across all tested adhesive systems (p=0.98).
- Significant differences were observed among the adhesive systems themselves.
- An 'all-in-one' adhesive system demonstrated a statistically significant difference in performance based on enamel surface moisture.
Conclusions:
- The moisture level of the enamel surface generally does not influence the shear bond strength of most contemporary dentin bonding systems.
- All-in-one adhesive systems may exhibit unique responses to variations in enamel surface wetness compared to other types.
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